APAKAH MAKSUD SHELL STAR dalam CORSICA?
Bintang Shell
Bintang shell, juga dikenali sebagai pembolehubah Gamma Cassiopeiae, adalah bintang yang mempunyai spektrum yang mempamerkan ciri-ciri yang menunjukkan cakera neraca keadaan sekitar bintang di khatulistiwa. Mereka mempamerkan variasi yang tidak teratur dalam kecerahan mereka disebabkan oleh aliran keluar bahan. Bintang-bintang shell adalah pemutar pantas, memberikan penjelasan separa pada mekanisme, tetapi bintang-bintang kulit masih dianggap misterius. Bintang-bintang Shell tergolong dalam jenis spektrum O7.5 hingga F5, tetapi spektrum mereka dicirikan oleh garisan penyerapan yang sangat luas disebabkan oleh putaran cepat dan cakera yang menyumbang kepada keghairahan spektrum yang lain. Halaju putaran adalah kira-kira 200-250 km / s, tidak jauh dari titik apabila pecutan putaran akan mengganggu bintang. Spektrum dan sifat umum bintang-bintang kulit keras sukar difahami, kerana ciri-ciri spektrum biasa dilengkapkan dengan pelepasan berubah-ubah, jadi kelas pencahayaan dan kelas spektrum yang tepat mungkin mudah disalah tafsir.
Definisi shell star dalam kamus Corsica
Takrif bintang shell dalam kamus adalah sejenis bintang, biasanya dari jenis spektrum B hingga F, dikelilingi oleh cangkerang gas.
CORSICA BUKU YANG BERKAIT DENGAN «SHELL STAR»
Ketahui penggunaan
shell star dalam pilihan bibliografi berikut. Buku yang berkait dengan
shell star dan ekstrak ringkas dari yang sama untuk menyediakan konteks penggunaannya dalam kesusasteraan Corsica.
1
Stellar Spectral Classification
There are A-type shell stars, even early-F shell stars, but their numbers are
relatively small. We term the type of shell star described in the paragraphs above
a classical A-type shell star. The mechanism producing these shells is still
unknown, ...
Richard O. Gray, Christopher J. Corbally,
2009
In 1952 Paul W. Merrill noted that it "is not a typical shell star, but rather an object
intermediate between an ordinary Be star and a planetary nebula. Perhaps it can
be thought of as a shell star whose outer atmosphere is extraordinarily ...
3
Mesoamerica After the Decline of Teotihuacan, A.D. 700-900
During this time disjunction occurs as the Teotihuacan star is transformed and
absorbed into a Maya star motif which becomes part of the Maya shell-star glyph
associated with death, war, sacrifice, and Venus. The shell-star glyph is often ...
Richard A. Diehl, Janet Catherine Berlo,
1989
4
An Introduction to Astrophysics
So whether a particular B star will appear as a normal B, a Be or a shell star
depends on the presence or absence of some particular entity surrounding the
star; that is the amount of material penetrated by the line of sight through the
envelope ...
5
Geological Survey of Canada, Open File 1945
It is interesting that one of the stars studied was a binary star, the companion of
the Wolf-Rayet being a shell star, a class to which we will come shortly. In
another of the stars studied she found that the shell was expanding at a rate of
3000 ...
6
Star Gods of the Maya: Astronomy in Art, Folklore, and Calendars
compound known as the “shell star,” which is associated with warfare (Fig. 5.70).
After studying twenty-five shell-star dates, Arthur Schlak (1996:186, table 1)
concluded that all refer to a time when Venus was moving slowly relative to the
Sun, ...
MODEL NAME Sportsman 314 Dart Nipigon Sportsman 315 315 Deluxe Shell
Star 08 Shell Star l/0 Caliente 0B Caliente l/O Shell Star 08 Shell Star l/O Corsair
05 Corsair l/0 Shell Star President SL 235 X SL 235 C LENGTH 13'9" 14'1" 14'1"
...
8
Spectroscopic Astrophysics: An Assessment of the ...
In a shell star, on the other hand, although the absolute strengths of some of the
lines are similar to those in supergiants, the continuous opacity is much reduced
and one can see through to the deeper layers of the star where the Stark ...
9
Triggered
Star Formation in a Turbulent Interstellar Medium ...
Dotted circle indicates the Cepheus flare shell, star symbols show the members
of the SU Cas association and other late B-early A type stars located at a
distance of about 250 pc. Positions of some molecular clouds are also indicated.
Bruce G. Elmegreen, Jan Palous,
2007
10
A Dictionary of Astronomy
Shell galaxies may be the result of a giant elliptical digesting a low-mass
companion galaxy. shell star A main-sequence star with a spectral type in the
range B-F whose spectrum contains prominent narrow absorption lines
originating in ...